* master:
  Ability to filter alerts by string parameters (elastic#92036)
  [APM] Fix for flaky correlations API test (elastic#91673) (elastic#92094)
  [Enterprise Search] Migrate shared role mapping components (elastic#91723)
  [file_upload] move ml Importer classes to file_upload plugin (elastic#91559)
  [Discover] Always show the "hide missing fields" toggle (elastic#91889)
  v2 migrations should exit process on corrupt saved object document (elastic#91465)
  [ML] Data Frame Analytics exploration page: filters improvements (elastic#91748)
  [ML] Data Frame Analytics: Improved error handling for scatterplot matrix. (elastic#91993)
  [coverage] speed up merging results of functional tests (elastic#92111)
  Adds a Reason indicator to the onClose handler in AddAlert and EditAlert (elastic#92149)